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A101989
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Largest prime which can be formed from digits of n-th prime p(n).
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1
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2, 3, 5, 7, 11, 31, 71, 19, 23, 29, 31, 73, 41, 43, 47, 53, 59, 61, 67, 71, 73, 97, 83, 89, 97, 101, 103, 701, 109, 311, 271, 311, 317, 193, 941, 151, 751, 631, 761, 317, 971, 811, 911, 193, 971, 991, 211, 223, 227, 229, 233, 293, 421, 521, 257, 263, 269, 271, 727
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(6)=31 because p(6)=13 and 31 is the largest prime which can be made from digits 1,3.
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MATHEMATICA
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Table[Max[Select[FromDigits/@Permutations[IntegerDigits[Prime[n]]], PrimeQ]], {n, 60}] (* Harvey P. Dale, May 03 2018 *)
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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STATUS
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approved
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